baber/WOPTO huggingface dataset:
Patent GB-1382150-A (GB)
Title: Navigation systems
IPC: G01S13/75
Filed: 1972-06-28
Abstract: 1382150 Aerials; radio navigation; transponders SPERRY RAND CORP 28 June 1972 [6 July 1971] 30239/72 Headings H4A H4D and H4L A navigation system comprises transmitter/ receiver means for sending out signals which are wept in frequency over a fine-determined range, and for receiving said signals after redirection by a passive beacon. Said beacon comprises aerial means whose directivity is frequency-dependent, and which is adapted selectively to redirect towards the transmitter/ receiver means a signal therefrom having a frequency within the fine-determined range. As shown in Fig. 4, a ship 15 is moving in a direction 17, and has aboard an azimuth scanning radar system, including an aerial 16 which is rotating as indicated by the arrow 18. The carrier frequency of the radar pulses from the aerial 16 is cyclically swept between the values f c1  to f cn  at a rate which is rapid compared with the rate of rotation of the aerial. A shore radio beacon comprises a receiver-radiator device 1 which, when the radar aerial is at the location 16, directs an echo signal of frequency fc 1  thereto. As the ship moves along the coast to locations 16a, 16b, ... echo signals of respective frequencies f c2 , f c3 , ... are directed to the radar aerial. In this way enhanced indications of such beacons are given on the radar display, as compared with ordinary objects. A modulator 12 may be associated with the receiver-radiator device 1, for coding the re-directed signals. Said device comprises an elongated hollow transmission line adapted to propagate a travelling electromagnetic wave with a velocity that is proportional to frequency, energy coupling means extending along the length of the line, and reflecting means at one end of the line so that an incoming signal may be returned along said line for re-radiation. As described, the transmission line is a length of rectangular waveguide which is terminated at one end 3, Figs. 1, 2, with a shorting wall 13, and at the other end with a wave-absorbing portion 4. An array of radiating slots 6, 6a, 6b, ... is provided along one broad face 5 of the waveguide, the interior of which may be fully or partially filled with low-loss dielectric material. The inner conductor 10 of a coaxial cable 2 extends into the waveguide near the end wall 13, and is connected in series with a controlling diode 9. A modulator 12 varies the bias on the diode 9, and produces a variation in the apparent radar scattering crosssection of the beacon. The image of the beacon on the radar display will nicker, in consequence, and coding information may be extracted by such means as tuned filters. The radar system is of conventional type, except that a frequency sweep generator is coupled to the transmitter and is controlled by a pulse counter using the synchronizing trigger pulses which are supplied to the transmitter (Fig. 5, not shown). The system may be adapted to operate in elevation rather than in azimuth, e.g. for use with aircraft.
Patent GB-145351-A (GB)
Title: Improvements in gas cooking stoves
IPC: F24C3/14
Filed: 1919-12-03
Abstract: 145,351. Spensers, Ltd., and Smith, H. E. Dec. 3, 1919. Gas cooking-stoves.-A stove shown in plan in Fig. 3 consists of front and back frames a and a<1>, having channelled vertical corner posts band b<1> which engage with the side plates f and g forming an air space between them. The plate f is made from compressed asbestos sheeting, and the inner plate g of enamelled or tinned iron. The back of the frame a is closed by a sheet of compressed asbestos j, and a similar sheet m, which may be provided with a glass panel for inspectional purposes, closes the space in the door frame k. The structure is held together by transverse bolts and nuts d, d', which also support the oven shelves. Two central gas-burners are used, one below the bottom shelf e, which is cut away at e' to allow the heated gas to pass through the oven, and the other immediately below the hot-plate at the top of the oven, which has depending flanges for engaging the front and back frames and the side plates. The gases escape through holes in the asbestos sheeting f. The upper shelves are preferably made of iron wire or perforated sheets. In an alternative construction, the products of combustion pass under the bottom shelf and between the space formed between the sheets f, g.
Patent GB-257462-A (GB)
Title: Improvements in and relating to electric irons
IPC: D06F77/00
Filed: 1925-12-01
Abstract: 257,462. Jackson, H. B. Dec. 1, 1925. No Patent granted (Sealing fee not paid). Hand-irons. - An attachment for electric hand-irons for varying the weight comprises a saddle-shaped weight a having a spring b for engaging the handle-stay and secured by screws c.
Patent GB-1036711-A (GB)
Title: Variable area extrusion head
Inventor: HARWOOD NORMAN FREDERICK
IPC: B29C48/09
Filed: 1961-08-23
Abstract: 1,036,711. Extrusion heads. BAKER PERKINS GRANBULL Ltd. Aug. 15, 1962 [Aug. 23, 1961], No. 30444/61. Heading B5A. In a variable area extruder head having an outer nozzle 1 (Fig. 1, not shown) and an inner mandrel 3, time profile cam means 17 are arranged to effect relative movement between the nozzle 1 and mandrel 3 to vary the size of the outlet orifice 2. The plastic material is fed from a cylinder 4 by a piston 5 to the shaft of which is attached the linear cam 17. A follower 16 regulates the movement of the mandrel 3 by means of a piston and cylinder arrangement 11, 12 thus automatically varying the orifice size. The ends of the nozzle and of the mandrel may be either flared outwardly or inwardly. Alternatively in a twin head extruder the mandrels 23 (Fig. 3, not shown) may be controlled by a piston-operated rack 25 moving pinion 33 fixed to eccentric 27. The automatic operation of the mandrels is controlled through an electrically operated hydraulic circuit, Fig. 4 (not shown).
Patent GB-908475-A (GB)
Title: Improvements in or relating to the production of semi-conductor devices
IPC: H01L23/06
Filed: 1959-09-07
Abstract: A thin tungsten plate for use in making a semiconductor device is roughened and then coated with pure or impurity-doped gold by pressing against it a gold foil 0.02-0.03 mm. thick perforated with 2 to 3 pin holes/mm.2 under a pressure of about 5 metric tons/cm.2 and subsequently heating at 1100 DEG  C. for 2 to 5 minutes.  1% of antimony or 0.5% of boron may be included in the gold coating as a doping agent and a coating of this doped gold may be applied to the first gold layer.
Patent GB-1479111-A (GB)
Title: Semiconductor thermal printing dev-ce
IPC: H04N1/032
Filed: 1975-07-22
Abstract: 1479111 Selective printing INTERNATIONAL BUSINESS MACHINES CORP 22 July 1975 [29 Aug 1974] 30555/75 Heading B6F Thermographic print head has a semiconductor substrate 24 with thermally and electrically isolated heating elements 6 whose surface adjacent the substrate is of smaller area than its face opposite the substrate. The substrate may be silicon of crystallographic orientation (100) or (111). The truncated pyramidal shaped elements 6 are separated by insulating material and arranged in a 5 x 4 array. A pair of heavily doped regions 7 connect each element 6 via aluminium conductors 28 to a potential source and transistor 4.
Patent GB-461367-A (GB)
Title: Production of transfers
IPC: B41F16/02
Filed: 1935-11-06
Abstract: 461,367. Transfers; printing processes. STEVEN, J. M. Nov. 6, 1935, No. 30655. [Class 100 (ii)] Multicoloured heat transfers are prepared by printing the pattern on paper in differentlycoloured, non-drying inks, dusting on fusible powder, and heating to fuse the powder in a single heating-operation.
Patent GB-429921-A (GB)
Title: Improvements in or relating to indicating instruments such as sensitive altimeters
IPC: G01L19/08
Filed: 1933-11-04
Abstract: 429,921. Indicating - instruments. BENDIX AVIATION CORPORATION, 105, West Adams Street, Chicago, U.S.A. Nov. 4, 1933, No. 30691. Convention date, Nov. 5, 1932. Addition to 425,299. [Classes 106 (ii) and 106 (iv)] Comprises an indicating-instrument such as an altimeter wherein the indicating means may be preset under one condition for another condition to give a desired indication when the second condition is reached, in which a differential mechanism is introduced into the transmission as in the parent invention, but characterized in that the construction is modified so that the shaft carrying the planet pinions is journalled in a member rotatable about the axis of the indicating means to permit the presetting action. The aneroid capsules 10, 11, 12 are carried by a transversely extending rod 13 and transmit movement through pivoted links 17, 18 to a rock shaft 20. The shaft is mounted in jewelled bearings, and extending through it is a calibrating screw, one end of which engages the spring bracket 21. A counterweight 28 is also provided on the shaft. The rock shaft is also connected by a link 29 to a counterweight 31 resiliently supported by a leaf spring 35 to minimize vibration due to extraneous forces. The shaft 20 carries a sector 39 in gear with a pinion 41 mounted on a shaft 42 mounted in jewelled bearings and carrying a large wheel 50 gearing with a pinion 51 on a shaft 52 journalled in angularly movable plates 53, 54 which are secured to an arcuate member 55. The plates 53, 54 are journalled on bushes 43, 58. Gears 59, 68 on the shaft 52 mesh with a gear 60 on the shaft 61 of the pointer 63 and with a gear 69 on a hollow shaft 70 carrying the pointer 67, respectively, the gears being chosen so that the pointer 63 indicates hundreds and the pointer 67 thousands of feet on concentric dials. The arcuate member 55 is provided with worm teeth 83 meshing with a worm 79 which may be rotated by bevel gear 87, 88, 90, 91, 92 from a knob on the front of the instrument. The pointers may thus be adjusted at one airport to the height of a destination airport so that on landing at the latter the instrument reads zero, and that without unmeshing any of the transmission gears. The bevel gear 91 is on the operating shaft 96 of a counter visible at the front of the instrument and registering the height or other value to which the instrument has been set. In a modification, the counter is dispensed with and a third dial concentric with the others rotated by a gear from the knob 84 to indicate the setting.
Patent GB-1028797-A (GB)
Title: Sheet piling
IPC: E02B3/04
Filed: 1964-08-04
Abstract: 1,028,797. Sheet piling. LIPS N.V. Aug. 4, 1964 [July 22, 1963], No. 30782/64. Heading E1H. Sheet piling comprises a number of spaced poles 6 (Fig. 3, not shown) driven into the earth and a continuous upstanding metal sheet 7 extending along the poles and entirely or partly in the earth. After driving poles 6 into the ground the sheet e.g. of aluminium alloy is unwound from reel 12 on a tractor 4. The sheet has perforations e.g. slots or holes 8 and may have ribs bent from its plane surface or corrugations. Roller 15 pushes the sheet into the earth and roller 16 pushes the sheet against poles 6. The sheet may be unwound from a stationary roller, the front end of the sheet being connected to an arm of a tractor, said arm being equipped with a coulter.
Patent GB-885503-A (GB)
Title: Apparatus for contacting a liquid with a liquid or a particulate solid
Inventor: MORRIS WILLIAM HADYN
IPC: B01D11/04
Filed: 1956-10-10
Abstract: 885,503. Extracts making. AVIATION, MINISTER OF. Jan. 10, 1958 [Oct. 10, 1956], No. 30852/56. Class 81 (1). [Also in Groups I and II] Apparatus for contacting two immiscible or partly immiscible components of different densities (both may be liquids or one a liquid and the other a particulate solid) in an extraction process comprises a long rectangular vessel subdivided by vertical crosswalls into a single series of alternate mixing vessels M1 to M5 and countercurrent flow displacement vessels C1 to C4, each displacement vessel between a pair of mixing vessels being connected at its bottom end to the bottom of one mixing vessel whilst its upper end is connected to the upper end of the other mixing vessel of the pair and mixing devices in the form of rotary impellers R1 to R5 in the mixing vessels. The end vessels M1 to M5 are respectively connected to the top of a separation vessel SH for the denser component and to the bottom of a separation vessel SL for the lighter component. The lighter component is supplied continuously to the vessel M1 whilst the denser component is supplied continuously to the vessel M5. When the apparatus is full of liquid and equilibrium conditions have been set-up, the components in the mixing vessels are thoroughly mixed throughout the height of the latter and the mixture is swept at the top and bottom into the adjacent displacement vessels or, in the case of the end vessels M1 and M5, also into the separator vessels SH and SL. The impellers do not produce any significant overall upward or downward flow. In each vessel C1 to C4 the lighter component will rise whilst the denser component will gravitate without separation of the components into two separate layers. The lighter component will pass through the series of mixing vessels and displacement vessels as indicated by the dotted arrows and is drawn-off from the separator SL at LL. Similarly the denser component will pass through the series in the opposite direction as indicated by the full-line arrows and is drawn-off from the separator SH at LH. The vessels C1 to C4 also serve as extraction units in the process. In modifications described with reference to Figs. 2 and 3 (not shown), the mixing vessels and displacement vessels consist of individual cylindrical or rectangular vessels linked by short straight pipes of rectangular or circular cross-sections, or the displacement vessels may each be in the form of a single S-shaped pipe connecting the bottom of one mixing vessel with the top of a succeeding mixing vessel.
Patent GB-1016497-A (GB)
Title: Corrosion resistant high tensile strength rail
IPC: C22C38/18
Filed: 1962-08-13
Abstract: A method of making a steel rail comprises subjecting a steel containing: .C.0.05-0.25% .Cr.2-6% .Mo.0.1-1.0% .Mu.0-1.5% .Si.0-1.0% with optional additions of .Ni.less than 1% .Cu.less than 1% .V.less than 0.5% .Ti.less than 0.5% .Nb.less than 0.5% .B.less than 0.01% the balance, apart from incidental impurities, being iron, to a blooming rolling, gradually cooling the rolled steel, reheating the steel to a rolling temperature and rolling at this temperature then gradually cooling the rail from 500-750  DEG C. down to 150-200  DEG C. over a period of time in excess of 7 hours. After the above treatment the steel is preferably tempered at 400-800  DEG C. followed by air cooling.
Patent GB-750928-A (GB)
Title: Improvements in coating metals with aluminium
IPC: C23C2/12
Filed: 1953-11-09
Abstract: A flux comprising a double fluoride of, or a mixture of single fluorides of, aluminium and an alkali metal containing 35-70 per cent by weight Al F3 and having a melting point below 760 DEG C. is applied to the cleaned surface of cobalt, chromium, titanium, nickel, iron or alloys thereof prior to coating with molten aluminium.  The alkali metal fluoride may be sodium, potassium or lithium fluoride. The flux may also contain sodium or potassium chloride, calcium fluoride or sodium or potassium fluoberyllate. The flux may be applied in aqueous solution or suspension or in methyl or ethyl alcohol, hexane or carbon tetrachloride.  Coating with aluminium may be effected by dipping, the bath or flux-coated article being agitated e.g. by induction heating.  Wire or strip may be coated continuously and the coated article may be cooled in the open air, by air blast or by water spray.
Patent GB-640299-A (GB)
Title: Means for protecting bearings and shaft seals
IPC: F16J15/54
Filed: 1947-11-21
Abstract: 640,299. Ventilating crank chambers. WILLYS-OVERLAND MOTORS, Inc- Nov. 21, 1947, No. 30967. Convention date, Dec. 7, 1946. [Class 7(ii)] [Also in Group XXVI] In an engine having means for ventilating the crankcase and valve chamber, and having an air cleaner 39 from which air is conveyed to the carburetter 31 through a tube 40, said means comprises a byepass 42 whereby air may flow from the cleaner 39 and via tube 40, oil filler tube 41, and crankcase 27 into tube 44 connected from the crankcase to the intake manifold 30 and through valve fitting 45, the reduced pressure existing in the intake manifold 31 causing a flow of air through the tube 44 and fitting 45 to create a circulation of air through the crankcase. A baffle for preventing the ingress of foreign matter into the seal for the crankshaft bearing is described (see Group XXVI).
Patent GB-427003-A (GB)
Title: Improved combination stop-valve and gas-pressure regulator
IPC: F24H9/20
Filed: 1934-10-29
Abstract: 427,003. Fluid - actuated valves. GAWA PATENT - VERWALTUNGS-AKT.- GES., Schaffhausen, Switzerland.-(Assignees of Frister Akt.-Ges., R. ; Obersch÷neweide, Berlin) Oct. 29, 1934, No. 30987. Convention date, Oct. 28, 1933. [Class 135] Valves controlled by pilot or relay valves.-A combined stop-valve and pressure regulator for use with a gas burner for water heaters has a main valve actuated by a diaphragm and an auxiliary valve in a control passage leading to a chamber on one side of the diaphragm, the other side being open to atmosphere. In the form shown the main valve co-operates with two opposed seats k, l so as to act as a gas deficiency valve as well as a pressure regulator, and is coupled to a diaphragm e. The lower side of the diaphragm, which is open to atmosphere is loaded by a spring o, while the chamber on the upper side is connected to the main inlet through a restricted aperture f and to space between the two main valve seats by pipes h and auxiliary valve i. This valve is shown as actuated by a snap action thermal disc m subject to the heat of the igniting flame n but it may be actuated by hand, or water pressure or otherwise. A water deficiency valve of usual construction is arranged between the outlet from the regulator and the gas burner. When out of service the main valve is held against its lower seat by inlet pressure admitted through the restriction f. When the ignition burner is lighted the auxiliary valve is opened and permits gas to pass to fill the burner supply conduit as far as the water deficiency valve and finally when the water deficiency valve is opened gas passes to the burner. The control chamber of the main valve is now supplied with outlet pressure and acts as a pressure resulator. Should the pressure fail the spring moves the main valve into contact with its upper seat until such time as the pressure is restored when it moves over to its lower seat. In a modification the auxiliary valve is formed as a shuttle lift valve adapted to connect the control chamber to the main outlet conduit or to atmosphere. In a further modification a throttled connection with the burner replaces the connection with the inlet conduit.
Patent GB-783584-A (GB)
Title: Electric sign
Inventor: SMITH REGINALD STANLEY
IPC: G09F23/00
Filed: 1956-04-10
Abstract: 783,584. Moving signs. KOLOFLO ELECTRIC SIGNS, Ltd. April 10, 1956, No. 31016/55. Class 3(1) In a sign comprising a rotary translucent or transparent colour filter 32, a curved reflector 11 and a removable display panel, the panel is formed with cut-out letters or painted designs or is provided with adjustable letters held by spigots or magnetic means. The panel may be made of glass, plastic material or wood and may be provided with openings forming letters or have parts of different degrees of translucency or colour.
Patent GB-497170-A (GB)
Title: Improvements in the manufacture and production of organic acids
IPC: C07C53/126
Filed: 1937-11-11
Abstract: Carboxylic acids are obtained by treating the saponified oxidation products of high-molecular aliphatic compounds with sulphur dioxide or soluble bisulphites in the presence of water. The initial materials for the oxidation may be hard or soft paraffin, paraffin oil, middle oils, hydrogenation products of coal, tar, or oxides of carbon, or also waxes, oils, fats and the like, the oxidation being effected in a known way.  Preferably the unsaponified material is removed before the treatment with sulphur dioxide or bisulphite.  The treatment of the saponification product may be effected in one or more stages, sulphur dioxide or bisulphite being used in all stages or only in certain stages, the remaining stages in the latter case, being effected with other agents such as hydrochloric or sulphuric acid.  The normal sulphites obtained may be treated with sulphur dioxide or gases containing it to regenerate bisulphite, and the surplus over the amount required to continue the process may be withdrawn as sulphite or bisulphite for utilization as desired.  The aqueous solution gradually becomes enriched with salts of lower fatty acids such as acetic, propionic and butyric acids which may be recovered by evaporating a part of the solution and treating with sulphuric acid.  In examples the saponified oxidation product of paraffin is treated with sulphur dioxide and sodium bisulphite respectively; the saponified oxidation product of a paraffin obtained from carbon monoxide and hydrogen is treated with sodium bisulphite; and a solid calcium soap of the oxidation product of hard paraffin, which contains 70 per cent of water, is treated with a gas containing 6 per cent of sulphur dioxide.
Patent GB-1468415-A (GB)
Title: Methods for removal reduction of prevention of deposits of mineral salts
IPC: C09K8/528
Filed: 1974-07-12
Abstract: 1468415 Oil recovery ENTREPRISE DE RECHERCHES ET D'ACTIVITES PETROLIERES (ELF) 12 July 1974 [13 July 1973] 31032/74 Heading E1F Mineral salts are dissolved by contacting the salts with macroheterocyclic ligands which form soluble complexes with the cations of the salts. The macroheterocyclic ligands may have the formula: where R 1  is hydrogen, a hydrocarbon group or an alkoxycarbonyl group or wherein the two R 1  groups form together a group having the formula:- A is a hydrocarbon group, X is nitrogen, phosphorus or an element of group 3 or 5 of the periodic table; D is sulphur, oxygen, an amine group, or a hydrocarbon group, provided that two of the groups or atoms represented by D are oxygen, sulphur or and X is nitrogen when one of the two D groups is oxygen or sulphur and the other is oxygen or  R is hydrogen or a hydrocarbon group; and m, n and p are integers from 0-5. The macroheteropolycyclic ligands may be used in drilling muds: or may be used in solution for injection into oil formations or for removing scale from pipes etc.
Patent GB-1102154-A (GB)
Title: Cutting ferrous metal
IPC: F23D14/42
Filed: 1966-07-12
Abstract: 1,102,154. Cutting by fusion. UNION CARBIDE CORPORATION. 12 July, 1966 [13 July, 1965], No. 31132/66. Heading B3V. [Also in Division F4] A flame cutting torch for use on ferrous metals has its central cutting oxygen passageway 12 supplied with pre-heating gas for heating the centre of the cutting zone before the cutting oxygen is turned on. An oxygen and fuel gas mixture is supplied through valve 36 to manifold 28 which connects with preheating ports 22 and through radial ports 10 and sleeve valve 16 with the central passageway 12. This produces preheating flames (38), (40), Fig. 2 (not shown). When the cutting oxygen is turned on by opening valve 34, sleeve valve 16 closes the radial ports 10.
Patent GB-1451706-A (GB)
Title: Method of fracturing oil wells
IPC: E21B43/26
Filed: 1974-07-15
Abstract: 1451706 Fracturing wells LUBRIZOL CORP 15 July 1974 [16 July 1973] 31259/74 Heading E1F An aqueous fracturing fluid comprises a water-soluble polymer of an acrylamidoalkanesulfonic acid, or a salt thereof. Preferred acrylamidoalkanesulfonic acids have the formula: where R<SP>1</SP>=H, halogen or C 1-7  alkyl, R 2 =H or C 1-7  alkyl and R<SP>3</SP>=C 1-7  alkyl.